Homebrew PCBs

-------- Forwarded Message --------
Subject: 	Re: [Homebrew_PCBs] Good techniques for cleaning up old artwork?
Date: 	Fri, 17 Feb 2017 13:27:40 -0700
From: 	Harvey Altstadter <harveyalt@...>
To: 	Homebrew_PCBs@yahoogroups.com



What you are looking for is machined socket pins. They are a metal 
cylinder with a solder pin on the bottom, and a recessed contact in the 
top. They are made by Mill-Max and others. I found these on ebay by 
searching for machined socket pins: 
http://www.ebay.com/itm/MACHINE-PIN-SOCKETS-SOLDER-TAIL-100-PCS-/222176780627?hash=item33bac4a153:g:FwUAAOSwOVpXesIn

Another possibility is to get some IC sockets with machined pins, mount 
and solder the bottom side. Then, with a heat gun, heat the plastic 
portion of the socket until it softens and you can pull it off. The top 
pads will then be available for soldering. The advantage of doing it 
this way, is that the socket pins will all line up. The same search on 
ebay produces many listings for sockets and headers that use pins with 
this construction. You might also find them cheaper in listings from 
some of the surplus outlets.

The is another version of this type of contact, but I couldn't find a 
listing. These are physically smaller, and come on a strip that is 
peeled away after soldering. I have used them, but I found that they 
were such low profile, that I sometimes filled the contact with solder 
when I was doing the top side.

Harvey
On 2/16/2017 8:47 PM, roylowenthal@... [Homebrew_PCBs] wrote:
>
> It used to be possible to get IC sockets that were solderable from 
> both sides. The socket pins came up over the side of the socket, 
> making it (relatively) easy to reach them with a small iron. It's 
> still possible to find sockets that have long enough pins to be 
> solderable from both sides if they're not mounted flush with the board.
>
>
> Roy
>